Increased Cerebrospinal Fluid F(2)-Isoprostanes are Associated with Aging and Latent Alzheimer's Disease as Identified by Biomarkers.
Summary of "Increased Cerebrospinal Fluid F(2)-Isoprostanes are Associated with Aging and Latent Alzheimer's Disease as Identified by Biomarkers."
Alzheimer's disease (AD) is a common age-related chronic illness with latent, prodrome, and fully symptomatic dementia stages. Increased free radical injury to regions of brain is one feature of prodrome and dementia stages of AD; however, it also is associated with advancing age. This raises the possibility that age-related free radical injury to brain might be caused in part or in full by latent AD. We quantified free radical injury in the central nervous system with cerebrospinal fluid (CSF) F(2)-isoprostanes (IsoPs) in 421 clinically normal individuals and observed a significant increase over the adult human lifespan (P < 0.001). Using CSF amyloid (A) beta(42) and tau, we defined normality using results from 28 clinically normal individuals <50 years old, and then stratified 74 clinically normal subjects >/=60 years into those with CSF that had normal CSF Abeta(42) and tau (n = 37); abnormal CSF Abeta(42) and tau, the biomarker signature of AD (n = 24); decreased Abeta(42) only (n = 4); or increased tau only (n = 9). Increased CSF F(2)-IsoPs were present in clinically normal subjects with the biomarker signature of AD (P < 0.05) and those subjects with increased CSF tau (P < 0.001). Finally, we analyzed the relationship between age and CSF F(2)-IsoPs for those clinically normal adults with normal CSF (n = 37) and those with abnormal CSF Abeta(42) and/or tau (n = 37); only those with normal CSF demonstrated a significant increase with age (P < 0.01). These results show that CSF F(2)-IsoPs increased across the human lifespan and that this age-related increase in free radical injury to brain persisted after culling those with laboratory evidence of latent AD.
Affiliation
Department of Pathology, University of Washington, Seattle, WA, USA, tmontine@u.washington.edu.
Journal Details
This article was published in the following journal.
Name: Neuromolecular medicine
ISSN: 1559-1174
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20632131
- DOI: http://dx.doi.org/10.1007/s12017-010-8126-6
Medical and Biotech [MESH] Definitions
Cerebrospinal Fluid Shunts
Tubes inserted to create communication between a cerebral ventricle and the internal jugular vein. Their emplacement permits draining of cerebrospinal fluid for relief of hydrocephalus or other condition leading to fluid accumulation in the ventricles.
Cerebrospinal Fluid Rhinorrhea
Discharge of cerebrospinal fluid through the nose. Common etiologies include trauma, neoplasms, and prior surgery, although the condition may occur spontaneously. (Otolaryngol Head Neck Surg 1997 Apr;116(4):442-9)
Cerebrospinal Fluid Proteins
Proteins in the cerebrospinal fluid, normally albumin and globulin present in the ratio of 8 to 1. Increases in protein levels are of diagnostic value in neurological diseases. (Brain and Bannister's Clinical Neurology, 7th ed, p221)
Cerebrospinal Fluid Pressure
Manometric pressure of the CEREBROSPINAL FLUID as measured by lumbar, cerebroventricular, or cisternal puncture. Within the cranial cavity it is called INTRACRANIAL PRESSURE.
Cerebrospinal Fluid Otorrhea
Discharge of cerebrospinal fluid through the external auditory meatus or through the eustachian tube into the nasopharynx. This is usually associated with CRANIOCEREBRAL TRAUMA (e.g., SKULL FRACTURE involving the TEMPORAL BONE;), NEUROSURGICAL PROCEDURES; or other conditions, but may rarely occur spontaneously. (From Am J Otol 1995 Nov;16(6):765-71)
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